scholarly journals HATCHING OF ILYANASSA OBSOLETA EMBRYOS: DEGRADATION OF THE EGG CAPSULE PLUG IN THE ABSENCE OF DETECTABLE PROTEOLYSIS OF THE MAJOR PLUG PROTEINS

1985 ◽  
Vol 169 (2) ◽  
pp. 365-376 ◽  
Author(s):  
CHARLES H. SULLIVAN ◽  
DALE B. BONAR
Keyword(s):  
Ilyanassa Obsoleta ◽  
Egg Capsule

scholarly journals FORMATION, ORGANIZATION, AND COMPOSITION OF THE EGG CAPSULE OF THE MARINE GASTROPOD, ILYANASSA OBSOLETA

1984 ◽  
Vol 167 (2) ◽  
pp. 378-389 ◽  
Author(s):  
CHARLES H. SULLIVAN ◽  
TIMOTHY K. MAUGEL
Keyword(s):  
Ilyanassa Obsoleta ◽  
Marine Gastropod ◽  
Egg Capsule

A new species of the genus Parapachymorpha Brunner von Wattenwyl, 1893 (Phasmida, Phasmatidae, Clitumninae) from Laos

Zootaxa ◽  
2020 ◽  
Vol 4732 (1) ◽  
pp. 196-200
Author(s):  
CHANG-MOON JANG ◽  
YANG˗SEOP BAE
Keyword(s):  
New Species ◽  
Body Surface ◽  
Type Species ◽  
Lateral View ◽  
Lower Margin ◽  
Additional Species ◽  
The World ◽  
A New Species ◽  
Egg Capsule

Parapachymorpha is one of eight genera within the tribe Medaurini of subfamily Clitumninae (Phasmatidae). It was established by Brunner von Wattenwyl (1893), with the type species Parapachymorpha nigra by subsequent designation of Kirby (1904), from Myanmar. Species of this genus are widely distributed in oriental tropics (Laos, China, Thailand, Myanmar, Vietnam and Cambodia), with only 11 known species in the world (Brock et al. 2018, Ho 2017). Species of the genus Parapachymorpha can be recognized by following characters (Brunner von Wattenwyl 1893;1907, Henmemann & Conle 2008, Ho 2017): 1) body robust in female and slender in male with long leg in relation to the length; 2) body surface of female granulose or spinose; 3) mesonotum of female more and less expanded posteriorly; 4) abdominal tergites lacking expanded prostero–lateral angles in both sexes; 5) laminal supraanalis undeveloped in female; 6) semi–tergite of male irregularly rectangular, with an additional finger­–like ventro–apical appendix on the lower margin and reduced or absent; 7) egg capsule oval to oblong and covered with a raised net–like structure in lateral view; 8) micropylar plate oval; 9) operculum concave or convex. In the present study, we describe additional species, Parapachymorpha minuta sp. nov. from Laos, with photographs of both sexes of adults and egg. 

scholarly journals Protein synthesis before and after fertilization in the egg of Ilyanassa obsoleta

1970 ◽  
Vol 60 (1) ◽  
pp. 115-118 ◽  
Author(s):  
P.E. Mirkes
Keyword(s):  
Protein Synthesis ◽  
Ilyanassa Obsoleta ◽  
Before And After

Developmental stages in the Digenea

Parasitology ◽  
1964 ◽  
Vol 54 (2) ◽  
pp. 295-312 ◽  
Author(s):  
Elon E. Byrd ◽  
William P. Maples
Keyword(s):  
Body Wall ◽  
Developmental Stages ◽  
Snail Host ◽  
The Body ◽  
Body Movements ◽  
Hatching Enzyme ◽  
Apical Papilla ◽  
Short Time ◽  
Membranous Body ◽  
Egg Capsule

The naturally oviposited egg of Dasymetra conferta is fully embryonated and it hatches only after it is ingested by the snail host, Physa spp.Hatching appears to be in response to some stimulus supplied by the living snail. The stimulus causes the larva to exercise a characteristic series of body movements and to liberate a granular sustance (hatching enzyme) from the larger pair of its cephalic glands. This enzyme reacts with the vitelline fluid to create pressure within the egg capsule, and with the cementum of the operculum, so that it may be lifted away. The larva's escape from the shell, therefore, is due to a combination of pressure and body movements.The hatched larva has a membranous body wall, supporting six epidermal plates, an apical papilla, two penetration glands and a central matrix (the presumptive brood mass).It lives for about an hour within the snail and during this time there is a reorganization of the central matrix which terminates in the formation of an 8-nucleated syncytial brood mass.The miracidial ‘case’, consisting of the body wall and the epidermal plates, ultimately ruptures to liberate the brood mass. Once the brood mass is free it penetrates through the gut wall in an incredibly short time.

scholarly journals Egg-capsule deposition of the marine gastropodOlivella minuta: the importance of an interspecific relationship with the soft-bottom bivalveTivela mactroides

2018 ◽  
Vol 85 (1) ◽  
pp. 126-132 ◽  
Author(s):  
Guilherme N Corte ◽  
Leonardo Q Yokoyama ◽  
Márcia R Denadai ◽  
Eduardo Bessa ◽  
Maria Claudia Z Salles ◽  
...  
Keyword(s):  
Interspecific Relationship ◽  
Soft Bottom ◽  
Egg Capsule

scholarly journals Egg capsule architecture and siting in a leaf-curling sac spider, Clubiona riparia (Araneae: Clubionidae)

2011 ◽  
Vol 39 (1) ◽  
pp. 76-83
Author(s):  
Robert B. Suter ◽  
Patricia R. Miller ◽  
Gail E. Stratton
Keyword(s):  
Leaf Curling ◽  
Egg Capsule

How is the morphology of the oviducal gland and of the resulting egg capsule associated with the egg laying habitats of Rajidae species?

2015 ◽  
Vol 98 (10) ◽  
pp. 2037-2048 ◽  
Author(s):  
Catarina Maia ◽  
Bárbara Serra-Pereira ◽  
Karim Erzini ◽  
Ivone Figueiredo
Keyword(s):  
Egg Laying ◽  
Oviducal Gland ◽  
Egg Capsule

scholarly journals Description of the egg capsule of Atlantoraja castelnaui (Elasmobranchii, Rajidae)

2008 ◽  
Vol 56 (1) ◽  
pp. 65-68 ◽  
Author(s):  
María Cristina Oddone ◽  
Alejo Mesa ◽  
Alberto Ferreira de Amorim
Keyword(s):  
Egg Capsule

Imposex Induction in the Mud Snail, Ilyanassa obsoleta by Three Tin Compounds

2006 ◽  
Vol 76 (4) ◽  
pp. 581-588 ◽  
Author(s):  
P. McClellan-Green ◽  
J. Romano ◽  
D. Rittschof
Keyword(s):  
Ilyanassa Obsoleta ◽  
Tin Compounds ◽  
Mud Snail

scholarly journals Egg Capsule Catechol Oxidase from the Little SkateRaja erinaceaMitchill, 1825

1988 ◽  
Vol 175 (2) ◽  
pp. 202-211 ◽  
Author(s):  
THOMAS J. KOOB ◽  
DAVID L. COX
Keyword(s):  
Catechol Oxidase ◽  
Egg Capsule
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